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Platinum(II)-Catalyzed Ethylene Hydrophenylation: Switching Selectivity between Alkyl- and Vinylbenzene Production

Description: Article discussing platinum(II)-catalyzed ethylene hydrophenylation and the influence of dipyridyl chelate ring size on catalyst activity and longevity.
Date: April 23, 2013
Creator: McKeown, Bradley A.; Gonzalez, Hector Emanuel; Friedfeld, Max R.; Brosnahan, Anna M.; Gunnoe, T. Brent; Cundari, Thomas R., 1964- et al.
Item Type: Article
Partner: UNT College of Arts and Sciences

The Reaction Kinetics of Amino Radicals with Sulfur Dioxide

Description: Abstract: Application of the laser photolysis–laser-induced fluorescence method to the reaction NH2 + SO2 in argon bath gas yields pressure-dependent, third-order kinetics which may be summarized as 𝑘 = (1.49 ± 0.15) × 10^−31 (𝑇/298 K) − 0.83 cm^6 molecule^−2 s^−1 over 292 – 555 K, where the uncertainty is the 95% confidence interval and includes possible systematic errors.The quenching of vibrationally excited NH2 is consistent with a high-pressure limit for NH2 + SO2 of (1.62 ± 0.25) × 10^−11 cm^3 molecule^−1 s^−1 over the temperature range 295–505 K, where again the 95% confidence interval is shown. Abinitio analysis yields a H2N – SO2 dissociation enthalpy of 73.5 kJmol−1, and comparison with RRKM theory and the exponential down model for energy transfer yields ⟨Δ𝐸⟩down = 350 cm^−1 for Ar at room temperature.
Date: April 29, 2015
Creator: Gao, Yide; Glarborg, Peter & Marshall, Paul
Item Type: Text
Partner: UNT College of Arts and Sciences

Ultrastructure of Azotobacter vinelandii

Description: Article discussing research on vegetative cells and cysts for Azotobacter vinelandii 12837 prepared for electron microscopy by several methods assumed to preserve structural details destroyed by techniques previously reported in literature.
Date: August 8, 1970
Creator: Vela, G. Roland, 1927-; Cagle, Gerald D. & Holmgren, P. R.
Item Type: Article
Partner: UNT College of Arts and Sciences

Effect of Peptone on Azotobacter Morphology

Description: Article on pleomorphism in cultures of Azotobacter vinelandii, induced by the addition of Difco peptone to the growth medium.
Date: July 1972
Creator: Vela, G. Roland, 1927- & Rosenthal, R. S.
Item Type: Article
Partner: UNT College of Arts and Sciences

Physiological Studies on Vitreoscilla stercoraria

Description: In this article, Vitreoscilla stercoraria ATCC 15218 was studied to elucidate some of its physiological characteristics.
Date: December 1972
Creator: Mayfield, D. C. & Kester, A. S.
Item Type: Article
Partner: UNT College of Arts and Sciences